Flexible piping.



1 Patnted Dec. Il, |900. J. F. H. HAVILAND & J. FARMER.

FLEXIBLE PIPING.

(Application med Nov. 2o, 1599.) (No Model.)

4 Sheets-Sheet l.

1H: Nunms PETERS co. PNoTaLIYv-m.. WASHINGTON. o. c.

No.v663,570. Patented Dec. II, 1900. J. & F. H. HAVLAND & J. FARMER.

FLEXIBLE PIPING.

(Application tiled Nov. 20, 1899.)

(No Model.) 4 Sheets-Sheet 2,

m: Nonms paens co, woraumo., M snmoToN. u. c

N0.'663,570. Patented Dec. Il, |900. J. @L F. H. HAVILAND J. FARMER.

FLEXIBLE PIPING.

(Application Bled Nov. 20, 1899.)

4 Sheets -Sheet 3,

Wauu-L( @Mmmm/Umm,

(No Muriel.)

mi Nonms Farias cc. #Hman-mo., wAsnlNm'oN, n. c.

Patentod Dec. Il, .|900. J. &. F. H. HAVILAND &. J. FARMER.

VFLEXIBLE PIPING. (Applicamq med Nov. 20, i899.)

4 Sheets Sheet 4.

(Nb Model.)

lJNrrE STATES ATENT kOFFICE.

JOHN HAV'ILAND, OF NORTHAMPTON, AND FREDERICK HENRY HAVILAND,

OF BOURNEMOUTH, ENGLAND, AND JOHN FARMER, OF GLASGOW, SCOT- LA ND.

FLEXIBLE PIPING.

SPECIFICATION forming part of Letters Patent No. 663,570, dated December 1 1, 1900.

Original application tiled April 25, 1899, Serial No. 714,412. Divided and this application filed November 20, 1899. Serial No. 737.642. (No model.)

T0 @ZZ whom t may concern:

Be it known that we,JoHN HAv1LAND,soliei tor, of Northampton, and FREDERICK HENRY HAVILAND, solicitor, of Bournemouth, England,and JOHN FARMER,engineer,of Glasgow, Scotland, all subjects of the Queen of Great Britain and Ireland, have invented certain new and useful Improvements in and Relating to Flexible Piping for Conveying Granular, Liquid, and other Material, of which the following is a specication.

According to our invention we make animproved india-rubber and canvas combined metal-lined liexible pipe for use in elevators and the like, suitable forgrain-suction pipes, to be placed between the barges or lighters, or other suitable places Where a vacuum or pressure has to be maintained,and is specially applicable for granular material passing through. l

Ve will describe our invention as applied to grain-elevators, though applicable to other purposes.

In order that others skilled in the art to which our invention relates may understand how same may be carried into practice, we have hereunto appended explanatory drawings.

Figures 1 to 26 are sectional views showing the different arrangements of pipes and their fittings as used under our invention.

Vhen bends are formed on these pipes suitable to the varying positions and conditions necessary in grain-discharging, the internal liners at the bent parts rapidly wear out 5 and our objects are, as well as making a flexible pipe, to make one so that ready access can be had to it internally for the purpose of repair of the metallic lining and also to fix the liners in the pipe in such a manner that there shall be no obstruction of the bolt or rivet heads inside to cause damage to the grain on its passage through; to maintain the relative positions of the liners to each other, so that upon the pipe being bent an overlap between the liners will always be maintained, and thus prevent an opening Where the grain could rush through and injure the pipe outside,and, further, to fix the liners in such a manner that each will be allowed to be turned on its own axis independent of its neighbor for the purpose when they get worn of exposing new surfaces to the scouring action of the grain at the greatest circle of the bend. These metallic ferrule liners M would beformed of cylindrical shape with tapered ends M to be embraced by the ends adjacent to them, as shown in Figs. 1 and 2, and be tted with wire rings m, brazed or soldered or formed onto the same and galvanized, if desired. The ferrules M would be kept in connected position by their projections iitting into corresponding indentations in the rubberized canvas cover or pipe N, which would be divided or split up longitudinally to allow of the liners M being inserted or withdrawn. These liners M may be formed of a straight shape and the ends expanded out to a curved or bell-mouth shape at m', which would abut against the canvas covering and perform the function of the Wire m, as shown in Figs. 3, 7, and 8, or the liners M may have parallel ends, the smaller diameter run into the larger by a curve or straight, as shown by Figs. 5 and 17, or they may be in the form of cones, as Fig. 6, or of conoidal shape, as shown by Fig. 4. As shown particularly in Figs. 10 to 16, these liners M would be secured together by an outer cover of rubberized canvas N, divided longitudinally and having fiaps N formed with the cover or laid over it for the purpose of lacing the pipe N tightly around the liners by cords n passing through eyelet holes n, and a tongue-piece or strip or strips of rubberized canvasm,2 (shown loose in Figs. 9 and 12) would be folded together over the joint, as shown in Figs. 10 to 13, to insure an efficient joint, or, if desired, the strips would be cemented or otherwise secured together, as well as folded. A tongue-piece or strip of rubberized canvas n3 may have its end n4 cemented over the laced joint of cover, as shown in Fig. 17, or the cover N may be surrounded by a strip n3,l1aving its tongue end n4 cemented over the joint, as shown in Figs. 18 and 19, or alternatively flaps N may form part of the strip n3 and one of these tlaps be cemented over the joint and then laced to the other flap fixed onto strip, as shown in Fig. 20.

IOO

In order to make the longitudinal joint of cover N perfectly ai r-tight at ends should the laces n2 not draw the cover close, as shown at X, Figs. 17 to 20, the strip 'n3 is carried beyond the end of cover N and cemented from end to end and iitted tightly over a band N3, preferably of indianubber, encircling the end socket connection M2, Fig. 17. The strip n3 is tied tightly over the band N3 with cord or wire N5 or a light gland may be used.

Fig. 22 shows a method of making the ends of cov er N air-tight by means of an overlapping india-rubber ring N3, fitting tightly over the end socket connections M2 and drawn over the outer end of the cover N. Usual fixingglands N4 for holding the pipe N to the end socket connections are fitted preferably over the rings N3. The longitudinal jointis shown closed by a strip n, cemented the length of the pipe N. The cover N may be drawn up tight over the liners M by means of tapes or bands N2.

Instead of wires m ridges or projecting surfaces m2 may be formed on the liners M to t into corresponding recesses in the outer cover N, as shown in Figs. 17 and 18, or convexities m2 may be made in the pipe-cover and corresponding concavities 'in the liners for holding them in place, as shown by Fig. 23.

To prevent the open joint of cover N, as at X, Fig. 19, we by another modification scarf the joint, as shown at O, Fig. 24, allowing a tongue-piece n4 the length of the cover` or pipe N to overlap, which we cement to it from end to end or we cement the joint O, as shown by Fig. 25, without tongue-piece.

In Fig. 26 separate rings of india-rubber, steel, or other material P are formed to encircle the beads m or other projections or concavities of the liners M, cut across and cemented, riveted, or xed at their proper distances apart in any convenient manner to a strip of rubberized cloth N the length of the pipe, but of breadth sufficient to be wound around the diameter of the liners M, inserted within as many times as required to give su cient strength. The end of the cloth is then cemented or otherwise fastened to the body from end to end and the whole fixed by usual glands N4 to end coupling connections M2.

These improvements, it will be seen, are

equally applicable to blast as well as suction elevators.

We claim as our inventionl. A flexible piping having cylindrical liners, the liners and piping having coperating recesses and projections by which the piping holds each liner in posi tion, independent of any other liner.

2. A flexible piping having liners, said piping being divided or slit longitudinally throughout its length thereby permitting the adjustment, removal or replacing of the liners, with means for securing the edges of the slit piping.

3. A flexible piping having liners, said pi ping being slit longitudinally, means for securing the edges of the slit piping, and coperating projections and recesses on the interior of the .pipingand exterior of the liners, whereby the latter `are independently removable and adjustable rotarily, as and for the purpose set forth. l

4. Flexible piping for conveying granular, liquid-and othermaterial, comprising short metallic ferrules or liners with an outside covering of rubberized canvas, the latter and the liners having cooperating projections and recesses, by which the liners are 'held in position independently of each other, one end of each liner entering the next, but free from contact therewith, asr and for the purpose set forth.

5. Flexible piping for elevating and discharging grain and the like, and consisting of laced rubberized canvas cover and jointprotecting flaps in combination with liners, substantially as set forth.

(i. A flexible piping having internal liners and a flexible cover, openlongitudinally, having scarfed edges at said longitudinal opening and means for securing the edges together.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

JOHN HAVILAND. FREDERICK HENRY HAVILAND. JOHN FARMER. Witnesses:

WM. MoKENzIn,

WM. RUTHERFORD. 

